Java IO & NIO - Files.walk() Examples

Java IO & NIO Java Java API 

Class:

java.nio.file.Files

Methods:

public static Stream<Path> walk(Path start,
                                FileVisitOption... options)
                         throws IOException

public static Stream<Path> walk(Path start,
                                int maxDepth,
                                FileVisitOption... options)
                         throws IOException

Return a Stream that is lazily populated with Path by walking the file tree rooted at a given starting file.

Parameters:

start - the starting file

maxDepth - the maximum number of directory levels to visit

options - options to configure the traversal

Returns:

the java.util.stream.Stream,Stream of java.nio.file.Path

Examples

package com.logicbig.example.files;

import java.io.IOException;
import java.nio.file.FileVisitOption;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.stream.Stream;

public class WalkExample {

    public static void main(String... args) throws IOException {
        Path start = Paths.get("C:\\temp");
        Stream<Path> stream = Files.walk(start, 3, FileVisitOption.FOLLOW_LINKS);
        stream.limit(10)
              .forEach(System.out::println);
    }
}

Output

C:\temp
C:\temp\copy-file-test.txt
C:\temp\my-file1034191516296691039.txt
C:\temp\my-file17448932312801228390.txt
C:\temp\my-file5278968784931578089.txt
C:\temp\my-file8612592247244588518.txt
C:\temp\settings
C:\temp\settings\settings.xml
C:\temp\settings\sub-settings